US1445127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic-valve mechanism
Assignee: VANCE ENGINEERING Co
•
Filing: 1921-01-22
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Granted: 1923-02-13
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Expires: 1941-01-22
Abstract
No abstract record available.
Inventors
- 👤 Harold W Buckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:38
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/16; B30B15/161; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87064; Y10T137/87169; Y10T137/87233; Y10T137/87241; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-02-12 | 1926-08-14 | 1927-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-02-12 | 1930-08-14 | 1931-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-02-12 | 1934-08-14 | 1935-02-13 | $7700.00 | Window Closed / Lapsed |